An Aside on MHD

MHD includes 2 more vector fields with the phase space density: This 12-D field gets simplified down to ~5-D using coupling equations. Unfortunately, the phase space is averaged into moments, and therefore not applicable for inner magnetosphere.
We assume both E and B model and keep as much information in phase space.

MHD includes 2 more vector fields with the phase space density: This 12-D field gets simplified down to ~5-D using coupling equations. Unfortunately, the phase space is averaged into moments, and therefore not applicable for inner magnetosphere.